volcano: volcanoes are weak spots in Earth's crust where molten material (magma) comes out to the surface magma: molten material of rock and it forms substances like gases and water from the mantle lava: when magma has reached the surface it is now called lava Ringof Fire: formed by a lot of volcanoes that rim the Pacific Ocean island arc: when the results create a string of islands hot spot: area where inside the mantle melts through the crust
Outline
What Is a Volcano?
volcano eruptions are one of the most dangerous events on Earth
lava that may be released during volcanic activity it starts to build up the Earth's surface
Earth's activity is a constructive force
it always adds new rock to the existing area, this may also form new islands
Volcanoes and Plate Tectonics
Vocabulary
volcano: volcanoes are weak spots in Earth's crust where molten material (magma) comes out to the surface
magma: molten material of rock and it forms substances like gases and water from the mantle
lava: when magma has reached the surface it is now called lava
Ring of Fire: formed by a lot of volcanoes that rim the Pacific Ocean
island arc: when the results create a string of islands
hot spot: area where inside the mantle melts through the crust
Outline
What Is a Volcano?
Location of Volcanoes